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The following relational database schema represents part of a simplified database used by a library:
tblBook (BookID, Title, PublisherID, Category,Price) tblPublisher (PublisherID, PublisherName,PublisherCity) tblAuthor (AuthorID, AuthorName, AuthorCity) tblBookAuthor (BookID, AuthorID)
a) Draw an ERD for the above relational schema.
b) Write SQL statements to perform the following queries.
i) List the title and price of all books with category 'Database' sorted in alphabetical order of title and ascending order of price ii) List the categories and the average price of a book in each category. iii) List the title and category of the most expensive book. iv) List the title and price of all 'Internet' books published by 'McGraw-Hill'. v) List the author who has written the most expensive book.
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A domain is a set of permissible values that can be given to an attribute. So each attribute in a table has a definite domain. Values to these attributes cannot be assigned outside
Using Relational Algebra which query finds customers, who have a balance of over 1000 ? Using Relational Algebra Π Customer_name( σ balance >1000(Deposit)) is query to find cu
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Order by clause By using this rows can be sorted It is used in the last portion of select statement By default it gets ascending order DESC: is used
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er diagtram for icici
Explain sorted File with advantages? Sorted file The sort utility shall perform one of the subsequent functions: 1.Sort lines of all the named files together and write the
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